Mountain Dental Services is a specialized dental practice whose only service is filling cavities. Mountain has recorded the following for the past nine months Month January February March April May June July August September Number of Cavities Filled 575 475 675 550 300 500 325 400 425 Total Cost 56,400 5.350 6,050 6,250 5.150 6.050 5,300 5,050 5,900 Required: 1. Use the high-low method to estimate total fixed cost and variable cost per cavity filled. (Round your answers to 2 decimal places.) Fixed Cost 3,970 Variable Cost per Unit 3.60 2. Using these estimates, calculate Mountain's total cost for filling 350 cavities Estimated Total Cost S 5,111